There actually is a JDM motor for the 88 to 91 prelude, it is a B20A and it is a pretty decent motor. I have one in my 91 prelude si. All I Have done to the motor is weapon R intake chikara header 2 1/4 piping with dtm exhaust and it runs 15 flat or 15.1 in the 1/4 mile. That's pretty good since on my other motor i could'nt get better than a 16.0 in the 1/4.